Gyratory crusher.



T. L. SMITB,y GYBATORYURUSHER.

APPLIUATION FILED JULY 22, 1912 `1,1 32,984:o Patented Mar. 23, 1915.

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@MW/vaya T. L. SMITH.

GYRATORY GRUSHBR.

APPLICATION FILED JULY 22, 1912 1,132,984., Patented Manzi-3,1915.

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' T. L. SMITH.

GYRATORY CRUSHER.

APPLIouIoN FILED JULY 22, 1912 1,132,984. Patented Mar. 28, 1915.

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T. L.l SMITH. GYRATORY cRUsHER.

APPLICATION FILED JULY 22, 1912 5 SHEETS-SHEET 4.

' Patented Mar.23,1915.

AAAAAAAAAAAA ILED JULY 22, 1912 1 132,984. Patented' Mar. 23, 1915. 5 EEEEEEEEEEEE 5.

THoMAs L. SMITH, or MILWAUKEE, WISCONSIN.

GYRATORY CRUSEER.

Speceation of Letters Patent.

ratemedliiiar. as, isis.

Application led July 22, 1912. Serial No. 710,912.

To' all whom it may concern.'

Be it known that I, THOMAS L. SMITH, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented-new and useful Improvements in Gyratory Crushers, of which the following is a description, reference beinglhad to the accompanying drawings, which are a part of this specification.

This invention relates to rock Crushers and has for its object to provide the eccentric 4 surface for producing the gyratory motion of the crusher head directly in alinement with the line of stress of the4 crushing action.

Another object of the invention is to provide an efiicient system of lubrication for gyratory crushers which will provide the working parts with lubricant free from dust and grit. y

Another object of the invention is to provide novel-*means for adjusting the crushing ring with relation to the crusher head and also novel means for clamping `the crusher ring in its adjustments.

Another'object of the invention is to iinprove upon details of construction of gyraj torycrushers.

With the above and other ob]ects in view the invention consists in the gyratory crusher as herein claimed and all equivalents.v I

Referring to the accompanying drawings in which like characters of reference-indi 1 cate the same parts in the different views:

Figure 1 is a central sectionall elevation of a gyratory crusher constructed in accordance with this invention; Fig. 2 is a plan view thereof with parts broken away,-v the line 1-1 indicating a sectional plane of Fig. 1; Fig. 3 is a sectional plan view thereof on the plane of line 3-3 of Fig. 1;'Fig. 4 is a detail view of the crusher ring clamping means; Fig. 5 is a sectional plan view thereof; Fig. 6 is a central sectional elevation of a gyratory crusher of a modified form also constructed in' accordance withl this invention; and, Fig. 7 is a sectional plan view thereof on the plane of line 7j-7 of Fig. 6, the lines 6-6 of Fig. 7- indicating the sectional plane, of Fig. 6.

In these drawings 10 indicates a frame' or casing of a generally cylindrical formation with internal radial webs 11 uniting it with a centrally located bearing portion 12.

:In that form of crusher illustrated in Figs. 1, 2 and 3 a cylindrical frame has an upper bearing frame 13 securely clamped to itsupper edge by having its lower portion constituting a split flanged ring fitting the edge of the frame 10 and clamped thereon by bolts 14, as best seen in Fig. 2. This upper bearing frame 13 extends across the cylindrical frame 10 leaving openings on opposite sides thereofA through which the material may be fed to the crusher and at its center it has a removable flanged bushing ,15 forming the upper bearing for a vertical crusher spindle 16 which has its lower end fitting within a bearing 17 in the bearing member 12 and which is seated on a bottom plate 18 secured to the lower'end of the bearing member 12 and closing the opening thereof to render .it oil tight. gear wheel 19 is keyed on the lower end of the crusher shaft 16 and meshes with a beveled pinion 20 on a suitably driven shaft` 21 which enters through the frame 10 and the bearing member 12 inclosed within a flanged sleeve 22 which completes the closure of the gear chamber in the bearing member 12. A crusher head 23 of a conical shape with a spherical convex base or bearing'portion is seated upon a broad spherical concave bearing 24 on the upper part of bearing member 12, the said spherical surfaces of the crusher head 23 and the bearing 24 having a common center at the point in the line of the a-Xis of rotation of the crusher shaft 16designated X Y in Fig. 1. The crusher shaft 16 has an eccentric conical enlargement 25 which fits within a correspondinglyshaped central opening of the crusher head 23 While the axis of the conical eccentric 2'5-intercepts the axis of lrotation of the crusher shaft 16 ,fa-t the point X and is indicated in Fig. 1 by the line X-Z. In the rotation of the crusher shaft 16 the axis X Z of the conical eccentric 25 travels around the aXis X Y of the crusher shaft andthe crusher head I234 movementA by the eccentric corresponding I with the movementl off the axis X Z and because of its lspherical bearingv center on the point X its movement corresponds with .the movement which it would have if it were suspended from the point X. Antifriction bushings 26 are provided at the bearing and the spherical bearing 24 for the crusher head.

A crusher ring 27 is provided which is conical and is provided with ribs to fit within the cylindrical frame 10 and its conical inner surface forms a converging throatway between it and the conical'crusher head 23 which throatway surrounds the crusher head and increases lin diameter in the direction of travel of the\ material therethrough. This crusherring 27` is provided with a sectional' lining of hardened metal plates 28 and is ladjustable vertically within the cylindrical frame 10 to vary the size of the throatway between the crusher head and the crusher ring.' As shown the crusher ring is provided with upwardly eXtending rods 29 clamped to a crosspiece 30 which is mounted on a shouldered adjusting screw 31 vwhich is threaded in a cover plate 32 secured to the upper-bearing frame 13`and covering the upper bearing 15 of the crusher shaft. By turning the adjusting screw 31 the crosso piece 30 may be raised or lowered and thus leo through its connections 29 with the crusher .ring 27 cause the latter to be raised or lowered within the cylindrical frame 10. When the adjustment of the crusher ring suits the requirements it is rigidly clamped to the frame 10'so that lthe stress to which the crusher ring is subjected during the-crushing operation will be borne by the frame.` Asshown more particularly in Figs. 4 and 5 the cylindrical frame 10 above its intermediate annular strengthening flange 33 is slit from one radial rib 34 to another to form slightlyv yielding tongue members 35 with-outwardly turned free ends on opposite sides of -one of the radial strengthening ribs 34 of the frame. A- bolt 36 connects the outwardly turned endsy of each pair of tongue members 35 and is seated in a notch in the edge of rib 34 between them. By tightening the bolts 36 the tongue members 35 are sprung inwardly against the langesf of the crusher ring 27 to form .a tight clamping connection between the crusher ring and the frame whichy Vwill avoid the crusher ring being crowded upwardly and will cause the stress of the crushing action against the crusher ring to beborneby the frame.

Aylubricant supply pipe 37 delivers lubri- Gant vunder pressure to an opening in the License lthe lubricant from the upper bearing mayrun down the outside of the crusher shaft 16 to the conical eccentric 25 thereof without being exposed to the dust rising from the crusher a sleeve 38 surrounds the crusher shaft and being of larger diameter permits the oil to pass between ityand the crusher shaft. This sleeve is slidably mounted in a guide bushing 39 which is secured to the bottom of the upper bearing frame 13 and is rounded at its lower end so as to form a spherical bearing against the upper end of the crusher head 23, said spherical bearing having the point X as its center so that the gyratory movements of the crusher head are freely permitted without a movement of the sleeve 38 and without admitting dust to the oil passageway between the sleeve and the crusher shaft. Tn order that' the sleeve 38 may continue its bearing against the crusher head notwithstanding wear of the parts it is made slidable within the ide bushing 39 and is preferably provi ed with coil springs 40 set in openings at its upper edge and bear-ing against the flanged bushing which forms the removable upper bearing 15 for the crusher shaft and a packing grove 41 surrounds thesleeve 38 to prevent the leakage of oil between `the sleeve 38 and the guide bushing 39. The lubricant which is thus delivered from the upper bearing 15 to the conical eccentric 25 of the crusher shaft serves to lubricate the bearing between said eccentric and the crusher head and at an intermediate point in its travel downthe eccentric a portion thereof will be conveyed through inclinedv oil ducts 42 through the crusher head to the outer edges of the spherical bearing 24 for the bottom of the crusher head. This spherical bearing 24, as seen in Fig. 3, has anl annular groove 43 to receive beveled gear 19 to lubricate the driving coni nection between the driving shaft and the crusher shaft and finally collects in the well formed by the bottom plate 18 and is drawn.

off by the lubricant pump, not shown, through the oil`discharge pipe 45. In its passage down the crusher shaft the oil has passageways provided for it inthe surface gravity cation of all parts and is closest to in thenotches of flanges 34 of iii-32.9.54

of the crusher shaft, such passageways being in the form of grooves 46,47 and 48 in the upper bearing surface, the conical eccentric bearing surface and'the lower bearing sur, face thereoflrespectively. The groove 47 the conical eccentric bearing surface of crusher shaft is atthe portion thereof which the airis of rotation while the grooves 46 and 48 are on the oppositeside of the crusher shaftand thus in eachlinstance the groove is positioned where the wear is least and the interruption -in the bearing surface can best be aorded. A hood or cap 49 rests upon the upper bearing fra-me 13 and protects the crusher ring adjusting parts from the material fed to the crusher.

In operation the coarse material is fed through the openings on opposite sid the upper bearing rame 13 and it falls into the annular flaring crushing space between' the crusher head 23 and the crusher ring 27. Here it is subjected to the crushing action due to the gyratory movements of the crusher head as produced by the turning of the conical eccentric 25 therein and its spher-` ical bearing support. The upper part of the crusher head being nearer the theoretical center of pivotal suspension has less'lateral movement than the lower edge of the crusher head and consequently the crushing stress exerted thereby upon the larger particles of material lodged at this point in the throatway of the machine more contracted portion of the throatway.

f the flaring shapeof the material in increasing integration prog small. The adjustability of the crusher permits of the product being varied so the machine may deliver a coarse product or a fine product as desired and the operation of effecting such adjustment'is simply t e releasing of the clamping action on *the crusher ring by loosening then turning the screw 31 the crusher ring as desired andreclamping it in its new-position by again tightening the boltsl 36. The bolts 36 being embe the frame preventan upward yielding of the crusher ring and the pressure of the crushing action.

The lubricatin system by which oil vis conducted throng the hollow crusher shaft to the upper end thereof and flows by over the several bearings ofthe crusher shaft and is conveyed to and tributed over the spherical bearing for the crusher head and finally lubricates the driving. connection amply provides for the lubrithe oil passageway being at all partsinclosed is protected from dust-and grit.

head,

inthe i center of within it fitting upon ,y ing upon a spherical bearin is greater than at the f center.

resses and they become' l f connecting that the bolts 36 andel to raise or lo er V61 maybe inserted in any of the invention illustrated In that form 7, the crusher shaft is not in Figs. 6 an provided but still has a conical eccentric turning within the crusher head and the crusher head is still mounted upon a spherical. bearing so as to have an oscillating from a theoretical point of pivotal suspension.- In this constructionv the cylindrical frame 10 has webs 11 supporting a central bearing member 12 substantially as before and a tubular vertical crusher shaft 50is journaled at its enlarged central portion within a bearing 51 in the bearing member with its reduced lower end ing 52 of bottom plate 53` which is secured to the bottom of the bearing The beveled gear 19 'keyed on the crusher shaft mesheswit the beveled pinion 2O on the driving shaft 421 within the flanged sleeve 22 as before and constitutes the means for turning the crusher shaft in its bearing.

'At its upper end the crusher shaft 50 has a conical eccentric 54 and as before the point, not shown, atwhich the axis of the conical eccentric intercepts the axis of rotation of the crusher shaft constitutes the theoretical pivotal suspension o a conical crusher head 55 which has a conical opening the eccentric 54 and. which hasa spherical bottom portion rest- 56 of the bearing member l12, such spherical the crusher head having this point of rnterception of the axis of the eccentric and the axis of rotation of the The clamping of the crusher ring 27 Within the cylindrical frame 10 is substantially';v as before by means of bolts 36 the outturned ends of yielding e members 35,' but the-meansl or ad- -the crusher, ring is t difton justing somewha ferent, consisting of, downwardly extending screw ro ds 57 lon vthe'edge of the crusher ring passing throughguide' lugs 58 on the side yof the frame 10 with pinions 50 threaded on them between the guide lugs. pinions 59 form nuts for lifting or lowering the crusher ring and are turned simultaneously by means o to turn on the annular flange frame and having internal rack meshing with the several pinions 59.

33 of the teeth 61 Apin member 12.,

crusher shaft as its a flanged ring 60 mounted with a' bearing yabove the crusher bearing for i'io These one of several ears 62 projecting from the rin 60 and by means thereof the said ring may e turned so as to simultaneously turn the pinions 59 and raise or lower the crusher ring. With this con-- struction the lubricant system is tially like that of thefother construction, a Supply Plpe,

not shown, connecting'with an opening 63 in the bottom plate 53 and the. lubricant therefrom filling the interior of the crusher shaftO and overflowing theup.-

substany Y which is also supplied l and then passing to crusherI head ip l per'end thereof into the' space between the end of the crusher shaft and the crusher head and th conical bearing of the eccentric'l principally by way of oil groove 64 in the facejof the eccentric an'd also passing through an oil duct 65 in the crusher headto the grooves in the spherical` bearing 5651s before and then through the large central bearing 5l of the crusher shaft, and .principally through the oil groove 66 in the lface of this portion of the crusher shaft with oil directly lfrom the interior of the crusher 'shaft by oil duct 67 at its upper'endand then passing over the teeth vof the beveled gear 19 as before the bearing 5.24 at the lower' end of the crusher shaft and principally through an oil groove 68 in the face of this portion of the crusher shaft which is also supplied direct from the interior of the crusher shaft, by an oil duct 69 and finally collecting in the bottom of the bottom plate 5K3 from whichit is .drawnofl' by. the oil discharge pipe 70. Witli this form of conen passing down through the struction the gyratory movement of the crusher head wlthlnv the crusher head as before and theey given the same gyratory' ore, owing to its spherical movement-vas bef bearing, but the avoidance of a bearing for i the crusher 'shaft above the' crusher head l without exposing the lubricant to dust and grit. A

struc'ted so that the material maymore leaves the crushi g space free and unobi; reto.

crushing-head is he same as before and the ,p large centralfbe'aring' 5l with its su mental bearing -52 ppl:` and the spherical bearing 56 amply withstand the stress of the crushingoperation and are thoroughly lubricated What I claiin as new and desire to secure by Letters Patent is:

-.1;'A`crushe`r, comprising a suitably journaled:rotary'crusher shaft, an` eccentric on the rcrusher shaft, a crusher head surroundhead is seated and supporting .the weight and the downward stress thereof, and a crusher ring surrounding the crusher head. l

2.' A crusher, comprising a vsuitably journaled rotary crusher shaft, a "conical eccentricc'thereon, a crusher head surrounding and fitting upn the eccentric, a bearing on which the crusher'head is seated and supportlng the weight and the downward stress thereof, and a crusher ring surround-ing the crusher head'. 4

3.l A crusher, comprising a s uitably journaled rotary crusher shaft, a conical eccentric thereon, a crusher head Surrounding and tting upon the eccentric, la spherical crusher head on the rounding and fitting support for the .on the frame Lasa-eea bearing vsupport for the crusher head on which the crusher head is seated and supporting the weight and the downward stress thereof having as its center the point of intersection of the axis of the the axis of rotation of the crusher shaft, and aV crusher ring surrounding the crusher head. Q

4f. A crusher, comprising a suitably journaled rotary crusher shaft, a conical-eccentric thereon, y a conical crusher head. surupon the eccentric, a spherical bearing support on which the bottom of the crusher head'is seated and supportingithe weight and the downward stress crusher ring surrounding the crusher head, and means for supplying lubricant under pressure through` shaft and out of the upper end of the 'same to Iiow over the bearings of the crusher shaft and the bearings of the crusher head.

6. A crusher, comprising a suitably journaled vertical rotary crusher shafthaving a central opening therethrough, an eccentric on the shaft, a crusher head and litting upon the eccentric, a bearing crusher head, and mean`s"for supplying lubricant under pressure ,through t e central opening )f the crusher shaft whereby it will overflow the l upper end thereof, there being grooves' in thecrusher shaft at its bearings and in its eccentric and there being oil passageways through the crusher head and port for the crusher'head whereby the ylubricant overflowing from the upper endof the crushershaft'is provided with `a closed conduit supplying lubricant to the bearings for the crusher shaftand the bearings for the crusher head. 7. A crusher, comprising a frame, a suitably driven crusher shaft having an upper and a lower bearing'in the frame, an eccentric' on the crusher shaft between the bearings, a crusher head surrounding the eccentric and fitting thereon,a bearing 'support for the crusher head oncwhich the crusher head is directly seated and supi surrounding grooves in the bearing sup'-,

eccentric with s head an annular crushing space of v and increaslng y the interior of the crusher center the point ofl intersection of the axis of the eccentric with the axis of rotation of the crusher shaft, and a crusher ring on the frame surrounding the crusher head.

9. A crusher, comprising a frame, a crusher shaft having an u'pper and a lower bearing therein, a conical eccentric on the crusher shaft between the bearings, a

crusher head surrounding the eccentric and fitting thereon a spherical bearing support on the frame for the crusher head having the crusher head directly seated thereon and supporting the weight sind downward stress of the crusher head having as its center the point of intersection of the axis of the eccentric with the aXiS of rotation of the crusher shaft, a crusher ring on the frame surround ing the crusherhead, means for supplying lubricant to the upper bearing, and a sleeve loosely surrounding the `crusher shaft and having a spherical bearing on the crusher head forming a cy osed oil communication i from the upper bearing tothe eccentric.

10. A crusher, tcomprising a frame, a crusher shaft having an upper and a lower bearing therein, a conical eccentric onthe crusher shaft vbetween ,the bearings, a crusher head surrounding the eccentric and fitting thereon, a spherical bearing support on the frame for the crusher head having as its center the point of intersection of the axis of the eccentric with the axis of rotation of the crusher shaft, a crusher ring on the frame surrounding the crusher head, means for supplying lubricant to the upper bearing, a guide bushing secured to the upper bearing, a sleeve loosely surrounding the crusher shaft and having a sliding lubricant tight fit Within the guide bushing, anda spherical bearing on the crusher head, and springs for holding the sleeve against its bearing on the crusher head where y the sleeve constitutes a closed conduit for lubricant from the upper bearing to the eccentric.

11. A crusher, comprising a frame, a hol-l.

low crusher shaft having an upper and a lower bearing therein, a conical eccentric on the crusher shaft between the bearings, a crusher head surrounding the eccentric and tting thereon, a spherical bearing support on the frame for the crusher head having as its center the point of intersection of means for delivering lubricant under pres sure through the lower end of the opening in the crusher shaft, said lubricant overflowing the upper end4 of the crusher shaft to lubricate the upper bearing, and a closed conduit from the upper bearing to the eccentric, therey being inclined passageways through the crusherhead leading from the eccentric bearing thereof to the supporting bearing.

12. A crusher, comprising a frame, a crusher shaft journaled in the frame, a crusher head on the crusher shaft, an upper bearing frame removably mounted on the first mentioned frame and in which upper bearing frame the crusher shaft is also journaled, a crusher ring within the first mentioned frame surrounding the crusher head,

`a jackscrew on the upper bearing frame,

l crusher shaft suitably mounted in the frame,

a crusher head on the crusher shaft, a crusher ring within the frame surrounding the crusher head, jackscrews connected with the crusher ring, pinions threaded on thel jackscrews, lugs on the frame between which the pinions are confined, anda rack ring mounted to turn onthe frame and meshing with the pinions for adjusting the position of the crusher ring with relation to the crusher head.

14. A crusher, comprising a frame having U-shaped slits in its walls to form'yielding tongue members with outturned ends, clamping bolts connecting the outturned ends of adjacent tongue members, a crusher ring within the frame clamped in lposition by the engagement of the yielding tongue members therewith and a suitably mounted crusher head within the crusher ring.

15. A crusher, comprising a suitably jour-A naled rotary crusher shaft, an eccentric thereon, a crusher head surrounding and fithead is seated and supportingthe weight4 ting upon the eccentric, a `spherical bearing and the downward stress of the Crusher gradually diminishing' Width und ncreasl0 head, the Agyratery motion of vtime Crusher ing diameter. head due to the turning of the eccentric In testimony whereof, I ax my signe- Witllin/'it resngilinghthehmxiondcf a. pivture, in presence of two Witnesses. 5 ota y sus e crus er ea ,an acrusher ring surrlding the Crusher head and hav- THMAS L' MTH `ng its inner crushing surface conical to Witnesses:

form With the crushing surface of the I C. H. KEENEY, Crusher head an annular crushing space of L. Gr. THEURER. 

